Locking mechanism for electrically-controlled elevator mechanisms.



J. S. MUGKLE.

PATENTED JUNE 7, 1904.

LOCKING MECHANISM FOR ELEGTRIGALLY CONTROLLED ELEVATOR AAAAAAAAAA NI MECHANISMS.

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J. s. MUoKLfi. LOGKINGMEGHANISM FOR ELEGTRIGALLY CONTROLLED ELEVATOR MECHANISMS. APPLICATION FILED JULY 23, 1903.

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UNITED STATES Patented June '7, 1904.

PATENT OEEIoE.

JOHN S. MUOKLE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO STANDARD ELEVATOR INTERLOOK COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

LOCKING MECHANISM FOR ELECTRlCALLY-CONTROLLED ELEVATOR MECHANISMS.

SPECIFICATION forming part of Letters Patent No. 762,186, dated June 7, 1904.

Application filed July 23, 1903. Serial No. 166,698. (No model.) i

To all whom it may concern.-

Be it known that I, JOHN S. MUoKLE, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Locking Mechanism for Electrically-Controlled Elevator Mechanism, of which the following is a specification.

My invention relates to certain improvements in elevators in which an operatinglever is used to govern the movement of the car.

The main object of my invention is to combine with this electric mechanism means by which the landing-doors are allowed to be opened when the car is at a landing and for locking the car at the landing when the door lever is in a central position.

is open. This object I attain in the following manner, reference being had to the accompanying drawings, in which Figure 1 is a front view of an elevator-car electric controller, showing my improvement. Fig. 2 is a rear view of Fig. 1. Fig. 3 is a plan view of an elevator-car, showing the connection between the mechanism shown in Fig. 1 and the door-locking mechanism. Fig. A is a view of the controller with the face of the casing removed. Fig. 5 is a detached View of the operating-lever and segment.

Referring to the drawings, A is the casing of an electric controller for starting and stopping the elevator-car. This controller-casing is mounted on two pedestals B B; On the rear of the casing A is a segment a, having a central recess a.

D is a lever pivoted at-cl to the-casing. This lever has a locking-bolt cl, which is arranged to drop into the notch a when the The lever is moved in one direction from the central position to shift the mechanism to raise the car and is moved in the opposite direction to lower the car.

Secured to the lever D is a segmental rack D, meshing with a pinion (Z on the shaft a, carrying a segmental contact E, which is arranged to travel over thepermanent contacts a on the casing. Attached to an arm cl of the segment D is a link f, connected to a plunger in one of the tubular pedestals, forming a dash-pot.

The above-described mechanism forms no part of my present invention, as it is simply one form of electric controlling mechanism for elevators.

G is a segment pivoted at (Z and attached by its arm g to the lever D at g in the present instance, and in some cases this segment G may be made integral with the lever D. The teeth of this segment mesh with a pinion /L on the shaft H, which is mounted in bearings on the frame I, secured to the pedestals B in the present instance by set-screws 71. On this shaft H is an elliptical gear-wheel H, which meshes with an elliptical gear-wheel J on a stud J. Attached to the pin j on this elliptical gear-wheel is a head of a rod k, leading to the lock mechanism. (Clearly shown in Fig. 3.) The locking mechanism consists in the present instance ofa spring-lever VI, pivoted to a plate M, secured to the elevatorwell. This lever engages a latch a on the door N at the landing, and on this plate is a lever m, controlled by the door which looks the plunger P, which is mounted on the car and connected to the controlling mechanism above described by a series of levers and rods. (Shown by dotted lines.) When the car is at a landing and the door is open, the lever 122 looks the plunger Pto prevent the operatinglever D being moved; but as soon as the door is closed by the operator it will shift the lever, release the plunger, and allow the operatinglever to be moved. The moment the door is closed and the car leaves the landing the springlever M locks the door, preventing it being opened when the car is not at a landing.

I claim as my invention 1. The combination of an electric controlling mechanism for elevators, a lever for shifting the controlling mechanism,- a segment thereon, a shaft, a pinion on the shaft meshing with the teeth of the segment, an elliptical gear on the shaft, a second elliptical gear meshing with the first-mentioned elliptical gear, locking mechanism on the elevator-car connected to the last-mentioned elliptical gear, and locking mechanism on the elevator-Well for locking the gear when the car is at a landing and the door is open, substantially as described.

2. The combination of an elevator-car, pedestals mounted on the car, a controller-frame carried by the pedestals, electric controlling mechanism therein, an operating-lever for shifting the controlling mechanism, a segment on said lever, a frame on the pedestals, a shaft mounted in bearings on the frame, a pinion mounted on the shaft and meshing With the segment of the operating-lever, an elliptical gear carried by the shaft, a second elliptical gear meshing with the first-mentioned elliptical gear and carried by a stud on the frame, a head pivoted to the last-mentioned elliptical gear, a plunger connected to said head, an elevator landing-door, means for locking the door, and means on the elevator- Well for locking the plunger When the car is at a landing, substantially as described.

3. The combination ofcontrolling mechanism t'or elevators, a lever for shifting the controlling mechanism, a segment thereon,a shaft,

a pinion on the shaft meshing with the teeth JOHN s. MUoKLE.

Witnesses:

WILL. A. BARR, J os. H. KLEIN. 

